shock spring/oil balance?

[Cardnim]

Hi guys,

At a race last Friday, a very experienced driver said that my springs were far too heavy for my shock oils - he said there was no damping.

My setup was:
Front shocks
37.5wt oil (Team A.)
3.5lb springs (Losi)

He said that he never runs anything other than 4lb springs at the front and I should return to the Shcumacher springs rather than run Losi.

However, Im confused because surely the 4lb is a HEAVIER spring so my balance between the oil (damping) and the spring (rebound) will be further out of whack?

I guess I just dont know how the shocks should feel when the oil and spring are balanced correctly. Can anyone shed any light on this for me?

Thanks!